Lets you set the upper limit on the user priority range and
change the current priority.

-muser-limit

When you use the -p option, specifies the
maximum amount you can raise or lower the priority.

-puser-priority

Allows you to designate a priority.

-ixidtypexidlist

Uses a combination of xidtype and xidlist to identify the process or processes. The xidtype specifies
the type of ID, such as the process ID or the user ID. Use xidlist to
identify a list of process IDs or user IDs.